Product Name:  Classic Desktop-Combo Wireless Keyboard & Optical Mouse Brand:  HP Model:  V4L73AA#ABA Color:  Black Features: Lightning Type:   None Numeric Keypad:  No Touchpad:  No Functions: Adjustable tilt:  Yes Multimedia keys:  Yes Internet keys:  Yes Connectivity: Wireless:  Yes Usb Port:  1 Interfaces:  R/F Compatibility: System Requirements:  Microsoft Windows 7/8/10 Plug & Play:  Yes Battery size:  AAA